US6546963B2 - Fire resistant piping system - Google Patents

Fire resistant piping system Download PDF

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Publication number
US6546963B2
US6546963B2 US09/733,126 US73312600A US6546963B2 US 6546963 B2 US6546963 B2 US 6546963B2 US 73312600 A US73312600 A US 73312600A US 6546963 B2 US6546963 B2 US 6546963B2
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Prior art keywords
polymer layer
metal tube
piping system
layer disposed
group
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Expired - Fee Related
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US09/733,126
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US20020069924A1 (en
Inventor
W. Philip Nuss
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VT Halter Marine Inc
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Halter Marine Inc
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Priority to US09/733,126 priority Critical patent/US6546963B2/en
Assigned to HALTER MARINE, INC. reassignment HALTER MARINE, INC. ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: NUSS, W. PHILIP
Publication of US20020069924A1 publication Critical patent/US20020069924A1/en
Assigned to VT HALTER MARINE, INC. reassignment VT HALTER MARINE, INC. ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: HALTER MARINE, INC.
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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
    • F16L9/00—Rigid pipes
    • F16L9/14—Compound tubes, i.e. made of materials not wholly covered by any one of the preceding groups
    • F16L9/147—Compound tubes, i.e. made of materials not wholly covered by any one of the preceding groups comprising only layers of metal and plastics with or without reinforcement

Definitions

  • This invention relates to a piping system, which has increased, fire resistance compared with available potable and non-potable water piping systems.
  • the inventions relates to the use of a unique laminated piping structure which has a metal core of aluminum and a polymer coating bonded to the metal core so that when the pipes heat to a high temperature, due to shipboard fire, the system does not entirely ignite, and the piping system is safer for the crew of the ship. Additionally, a long need has existed for a pipe which avoids corrosion, having a smooth surface and a diffusion tightness approaching 100%, and ability for linear expansion which can be as low as that of copper, enabling larger fixing distances.
  • a piping system has been long desired which would meet the A-18 marine type approval under IMO resolution A-653 (16) and Resolution MSC 41(64).
  • Potable and non-potable piping systems such as those used for water ballast have been prepared using metal pipes, which are traditionally expensive. Certain polymer pipes have been refused by the Coast Guard regulations due to their fundamental instability at high temperatures, such as at incendiary temperatures. Other pipes, such as PEX, and PVC along have been insufficient because the heat of expansion of the pipe is very high. For example, a plain polypropylene pipe is 100 times the heat of expansion at 500K than copper is. Copper is approximately twice that of galvanized steel.
  • the present invention is designed to utilize a flexible pipe system which can be bent by hand yet keep its shape, eliminating the need to form pieces such as elbows and bends.
  • a ship including a multi-layer composite piping system formed from a laminated pipe structure comprising: (a) a metal tube; (b) a bonding layer disposed on both sides of the metal tube; and (c) an internally cross-inked polymer layer disposed on both bonding layers.
  • Another object of this invention is to provide a piping system, which has fire resistant functionality utilizing a metal and polymer/copolymer laminate structure.
  • FIG. 1 shows a perspective view of a piping system in a hold of a ship
  • FIG. 2 shows an exploded view of the piping used in the piping system
  • FIG. 1 shows a ship 10 for transporting grain is divided by partition walls 12 into a plurality of holds 14 for accommodating grain. At the bottom of the hold 14 is a piping system 16 .
  • the piping system 16 is connected to water ballast tans for ballasting the ship during loading.
  • FIG. 2 shows the detail of the pipe used in the piping system 16 .
  • the pipe is preferably made from a tube of aluminum 18 which further has bonding layers 20 and 21 , such as a maelic anhydride adhesive disposed on the outer surface.
  • bonding layers 20 and 21 Disposed on the bonding layers 20 and 21 are polymer layers 22 and 23 , such as a high density polyethylene copolymer, a propylene/ethylene copolymer or another alpha olefin polymer.
  • the polymer layer can be selected from the group consisting of: polypropylene, polyethylene, polybutylene, copolymers thereof, and blends thereof.
  • a high density polymer which is internally cross-linked, enabling the resultant pipe composite to have high density and be highly resistant to abrasion.
  • a high-density internally cross-linked polyethylene is the most preferred material for use in the present invention. High-density polyethylene is extremely resistant to chemicals, solvents and extreme temperatures, from 40 degrees below 0 degree Fahrenheit, to 40 degrees Fahrenheit and above zero. These characteristics are very desirable and heretofore unknown for ship use. It is also preferred that the polymer or copolymers be at least partially crystalline.
  • Additional fire resistant additives can be mixed into the polymer, copolymer as well as other stabilizers, which improve the polymer's resistance to degradation.
  • the polymer can further include antioxidants, UV stabilizers, fillers and flame resistant materials as well as flame spread reduction agents. Additional components could be added to the polymer prior to blending such as a fluid intumescent base material, an oxygen reduction agent, a thermal transmission reduction agent, a volatile organic reduction component, a mechanical enhancer component for physical impact resistance and adhesion to a substrate, a water-resistance agent, or an elasticity agent to increase resistance to cracking and shrinking and to improve ease of handling.
  • Typical flame spread reduction agents can be aluminum trihydrates, ammonium orthophosphates, zinc oxides, zinc borates, sodium silicates, calcium silicates, antimony oxides, zinc metaphosphate or potassium metaphosphate.
  • the oxygen reduction agent which could be used, could be urea, urea formaldehyde or dicynadiamide.
  • the thermal transmission reduction agent could be zirconium oxide, chromium oxide, and yttrium oxide or potassium oxide.
  • the water-resistant agent that could be added can be selected from the group of ethyl hydroxy ethyl cellulose, carboxylmethyl cellulose, ammonium polyphosphate, melamine-formaldehyde coatings, acrylics, silicones, diethylene glycol or monoethyletheracetate.
  • Elasticity agents may include elastomerics or acrylics. Pigments may also be added to the polymer layer.
  • the additive materials can be used in amounts from 2 to 15% by weight in the polymer or in other amounts, which would be obvious to one skilled in the art of blending polymer components.
  • the selections and combination of additives would depend on the type of application needed.
  • the metal tube which is preferably aluminum has the polymer composite extruded or sprayed onto the tube or disposed on the metal is a plurality of layers, or possibly bonded with a bonding resin, such as a maelic anhydride.
  • the polymer is disposed on the inner and outer surfaces of the metal tube.
  • the formed multi-layer composite pipe range in size with a nominal diameter from about 10 mm to 63 mm.
  • the pipe composite material preferably is designed to sustain a pressure of up to 210 psi and up to 210 degrees Fahrenheit.
  • the piping is preferably formed from (a) a metal sheet which is lapped and welded, or (b) bolted and welded prior to coating with the bonding layer, preferably on both sides, and the polymer layer.
  • the bonding layer may have a maleic anhydride content from 0.05 to 0.5% by weight.
  • the bonding material may be an ethylene-acrylic acid polymer or an ethylene-methacrylic acid copolymer.
  • films may be adhered to the pipe on the exterior to improve durability while maintaining the flexibility of the pipe. If a film is used, it could be a non-crystalline linear polyester having a softening point below 150 degrees centigrade.

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Rigid Pipes And Flexible Pipes (AREA)

Abstract

A ship including a multi-layer composite piping system formed from a laminated pipe structure comprising: (a) a metal tube; (b) a bonding layer disposed on both sides of the metal tube; and (c) an internally cross-linked polymer layer disposed on both bonding layers.

Description

SPECIFICATION
This invention relates to a piping system, which has increased, fire resistance compared with available potable and non-potable water piping systems. The inventions relates to the use of a unique laminated piping structure which has a metal core of aluminum and a polymer coating bonded to the metal core so that when the pipes heat to a high temperature, due to shipboard fire, the system does not entirely ignite, and the piping system is safer for the crew of the ship. Additionally, a long need has existed for a pipe which avoids corrosion, having a smooth surface and a diffusion tightness approaching 100%, and ability for linear expansion which can be as low as that of copper, enabling larger fixing distances. A piping system has been long desired which would meet the A-18 marine type approval under IMO resolution A-653 (16) and Resolution MSC 41(64).
BACKGROUND OF THE INVENTION
Potable and non-potable piping systems, such as those used for water ballast have been prepared using metal pipes, which are traditionally expensive. Certain polymer pipes have been refused by the Coast Guard regulations due to their fundamental instability at high temperatures, such as at incendiary temperatures. Other pipes, such as PEX, and PVC along have been insufficient because the heat of expansion of the pipe is very high. For example, a plain polypropylene pipe is 100 times the heat of expansion at 500K than copper is. Copper is approximately twice that of galvanized steel.
It has been difficult to acquire and install lighter piping systems than the traditional galvanized steel systems and copper because of the problems with heat of expansion and with flame resistance and accordingly the installation of piping on board ship has been expensive due to the weight and the talent involved in welding the pipe together.
For this reason, it is advantageous to utilize a laminated pipe systems which is lighter than traditional metal pipes and easier to use than concrete pipes yet still have fire resistant functionality.
SUMMARY OF THE INVENTION
Accordingly, it is an object of this invention to provide a ship with a pipe system made from multi-layer pipe, which is flexible and lighter than traditional metal piping system. The present invention is designed to utilize a flexible pipe system which can be bent by hand yet keep its shape, eliminating the need to form pieces such as elbows and bends.
A ship including a multi-layer composite piping system formed from a laminated pipe structure comprising: (a) a metal tube; (b) a bonding layer disposed on both sides of the metal tube; and (c) an internally cross-inked polymer layer disposed on both bonding layers.
Another object of this invention is to provide a piping system, which has fire resistant functionality utilizing a metal and polymer/copolymer laminate structure.
BRIEF DESCRIPTION OF THE DRAWINGS
FIG. 1 shows a perspective view of a piping system in a hold of a ship
FIG. 2 shows an exploded view of the piping used in the piping system
DETAILED DESCRIPTION
FIG. 1 shows a ship 10 for transporting grain is divided by partition walls 12 into a plurality of holds 14 for accommodating grain. At the bottom of the hold 14 is a piping system 16. The piping system 16 is connected to water ballast tans for ballasting the ship during loading.
FIG. 2 shows the detail of the pipe used in the piping system 16. The pipe is preferably made from a tube of aluminum 18 which further has bonding layers 20 and 21, such as a maelic anhydride adhesive disposed on the outer surface. Disposed on the bonding layers 20 and 21 are polymer layers 22 and 23, such as a high density polyethylene copolymer, a propylene/ethylene copolymer or another alpha olefin polymer. The polymer layer can be selected from the group consisting of: polypropylene, polyethylene, polybutylene, copolymers thereof, and blends thereof. It is most preferred to use a high density polymer, which is internally cross-linked, enabling the resultant pipe composite to have high density and be highly resistant to abrasion. A high-density internally cross-linked polyethylene is the most preferred material for use in the present invention. High-density polyethylene is extremely resistant to chemicals, solvents and extreme temperatures, from 40 degrees below 0 degree Fahrenheit, to 40 degrees Fahrenheit and above zero. These characteristics are very desirable and heretofore unknown for ship use. It is also preferred that the polymer or copolymers be at least partially crystalline.
Additional fire resistant additives can be mixed into the polymer, copolymer as well as other stabilizers, which improve the polymer's resistance to degradation. Specifically, the polymer can further include antioxidants, UV stabilizers, fillers and flame resistant materials as well as flame spread reduction agents. Additional components could be added to the polymer prior to blending such as a fluid intumescent base material, an oxygen reduction agent, a thermal transmission reduction agent, a volatile organic reduction component, a mechanical enhancer component for physical impact resistance and adhesion to a substrate, a water-resistance agent, or an elasticity agent to increase resistance to cracking and shrinking and to improve ease of handling. Typical flame spread reduction agents can be aluminum trihydrates, ammonium orthophosphates, zinc oxides, zinc borates, sodium silicates, calcium silicates, antimony oxides, zinc metaphosphate or potassium metaphosphate.
The oxygen reduction agent, which could be used, could be urea, urea formaldehyde or dicynadiamide. The thermal transmission reduction agent could be zirconium oxide, chromium oxide, and yttrium oxide or potassium oxide. The water-resistant agent that could be added can be selected from the group of ethyl hydroxy ethyl cellulose, carboxylmethyl cellulose, ammonium polyphosphate, melamine-formaldehyde coatings, acrylics, silicones, diethylene glycol or monoethyletheracetate. Elasticity agents may include elastomerics or acrylics. Pigments may also be added to the polymer layer.
The additive materials can be used in amounts from 2 to 15% by weight in the polymer or in other amounts, which would be obvious to one skilled in the art of blending polymer components. The selections and combination of additives would depend on the type of application needed.
The metal tube, which is preferably aluminum has the polymer composite extruded or sprayed onto the tube or disposed on the metal is a plurality of layers, or possibly bonded with a bonding resin, such as a maelic anhydride. The polymer is disposed on the inner and outer surfaces of the metal tube.
It is anticipated that the formed multi-layer composite pipe range in size with a nominal diameter from about 10 mm to 63 mm. The pipe composite material preferably is designed to sustain a pressure of up to 210 psi and up to 210 degrees Fahrenheit.
The piping is preferably formed from (a) a metal sheet which is lapped and welded, or (b) bolted and welded prior to coating with the bonding layer, preferably on both sides, and the polymer layer.
The bonding layer may have a maleic anhydride content from 0.05 to 0.5% by weight. In addition to maleic anhydride, the bonding material may be an ethylene-acrylic acid polymer or an ethylene-methacrylic acid copolymer.
Additionally, films may be adhered to the pipe on the exterior to improve durability while maintaining the flexibility of the pipe. If a film is used, it could be a non-crystalline linear polyester having a softening point below 150 degrees centigrade.
Although the invention has been shown and described in terms of a preferred embodiment, thereof it will be clear that many changes and modifications will be obvious to one skilled in the art without departing from the spirit and scope of the invention as defined in the claims.

Claims (4)

What is claimed is:
1. A ship including a multi-layer composite piping system formed from a laminated pipe structure comprising:
(a) a metal tube;
(b) a bonding layer disposed on both sides of the metal tube; and
(c) an internally cross-linked polymer layer disposed on both founding layers; wherein said polymer layer is selected from polymers which are members of the group comprising polypropylene, polyethylene, polybutylene, copolymers thereof, and blends thereof wherein said polymer layer is in at least a partially crystalline form.
2. A ship including a multi-layer composite piping system formed from a laminated pipe structure comprising:
(a) a metal tube;
(b) a bonding layer disposed on both sides of the metal tube; and
(c) an internally cross-linked polymer layer disposed on both founding layers; wherein said polymer layer is selected from polymers which are members of the group comprising polypropylene, polyethylene, polybutylene, copolymers thereof, and blends thereof wherein said polymer layer further comprises additives, which can include a member of the group: antioxidants, elasticity agents, water resistant agents, UV stabilizers, fillers, flame resistant materials, and other stabilizers.
3. A ship including a multi-layer composite piping system formed from a laminated pipe structure comprising:
(a) a metal tube;
(b) a bonding layer disposed on both sides of the metal tube; and
(c) an internally cross-linked polymer layer disposed on both founding layers; wherein said polymer layer is selected from polymers which are members of the group comprising polypropylene, polyethylene, polybutylene, copolymers thereof, and blends thereof wherein said polymer layer further includes a pigment.
4. A ship including a multi-layer composite piping system formed from a laminated pipe structure comprising:
(a) a metal tube;
(b) a bonding layer disposed on both sides of the metal tube; and
(c) an internally cross-linked polymer layer disposed on both founding layers; wherein said polymer layer is selected from polymers which are members of the group comprising polypropylene, polyethylene, polybutylene, copolymers thereof, and blends thereof and further comprising a fluid intumescent base material.
US09/733,126 2000-12-08 2000-12-08 Fire resistant piping system Expired - Fee Related US6546963B2 (en)

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US20020189697A1 (en) * 2001-06-06 2002-12-19 Jyri Jarvenkyla Multilayer pipe and method for manufacturing one
US20040045619A1 (en) * 2002-07-23 2004-03-11 Backman Arthur L. Crosslinked polyethylene pipe having a high Density polyethylene liner
US20040219317A1 (en) * 2003-01-22 2004-11-04 Wellstream International Limited Process for manufacturing a flexible tubular pipe having extruded layers made of crosslinked polyethylene
US20060213569A1 (en) * 2005-03-22 2006-09-28 Tokai Rubber Industries, Ltd. Hose and method of producing the same
US20070107794A1 (en) * 2005-09-14 2007-05-17 Gerhard Rosenberg Sprinkler tube
US20080001405A1 (en) * 2006-06-30 2008-01-03 Anna Kui Gey Plastic-lined metallic pipe for conveying drinking-water and the connectors for the same
US20100071797A1 (en) * 2008-09-25 2010-03-25 Jungers Jon W Fire retardant air handling system ductwork component and method of manufacture
US20100266790A1 (en) * 2009-04-16 2010-10-21 Grzegorz Jan Kusinski Structural Components for Oil, Gas, Exploration, Refining and Petrochemical Applications
US20100263761A1 (en) * 2009-04-16 2010-10-21 Niccolls Edwin H Structural Components for Oil, Gas, Exploration, Refining and Petrochemical Applications
US20100266781A1 (en) * 2009-04-16 2010-10-21 Grzegorz Jan Kusinski Structural Components for Oil, Gas, Exploration, Refining and Petrochemical Applications
US20130263961A1 (en) * 2012-04-04 2013-10-10 Lordo America, Inc. Composite pipe having improved bonding strength between heterogeneous materials, and apparatus and method of manufacturing the same
US20150252917A1 (en) * 2014-03-04 2015-09-10 W.E. Hall Company, Inc. Composite underground pipe structure
US20190257450A1 (en) * 2018-02-21 2019-08-22 Hs Marston Aerospace Limited Intumescent protection of ptfe hoses
US10995884B1 (en) 2019-03-26 2021-05-04 Titeflex Corporation Multilayer composite pipe and pipe assemblies including reflective insulation
US11466799B2 (en) 2019-03-26 2022-10-11 Titeflex Corporation Multilayer composite pipe and pipe assemblies including reflective insulation
US11466798B2 (en) 2019-03-26 2022-10-11 Titeflex Corporation Multilayer composite pipe and pipe assemblies including reflective insulation
US11480271B2 (en) 2019-03-26 2022-10-25 Titeflex Corporation Multilayer composite pipe and pipe assemblies including reflective insulation
US11846370B2 (en) 2019-03-26 2023-12-19 Titeflex Corporation Multilayer composite pipe and pipe assemblies including reflective insulation
US12220894B2 (en) 2020-07-31 2025-02-11 Titeflex Corporation Multilayer composite tube with flame-resistant layers
US12305792B2 (en) 2019-03-26 2025-05-20 Titeflex Corporation Multilayer composite pipe and pipe assemblies including reflective insulation
US12320449B2 (en) 2019-03-26 2025-06-03 Titeflex Corporation Multilayer composite pipe and pipe assemblies including reflective insulation

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DE102007050344A1 (en) * 2007-10-12 2009-04-23 Eisenwerke Fried. Wilh. Düker GmbH & Co. KGaA Tube for guiding liquids and method for producing the same
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CN107477270A (en) * 2017-09-27 2017-12-15 江苏瑞腾涂装科技有限公司 A kind of corrosion-resistant and anti abrasive steel-plastics composite pipe

Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4216802A (en) * 1978-10-18 1980-08-12 Eaton Corporation Composite tubing product
US4559973A (en) * 1982-11-26 1985-12-24 The Furukawa Electric Co., Ltd. Water impervious heat shrinkable tube
US5671780A (en) * 1992-11-17 1997-09-30 Rasmussen Gmbh Multilayer flexible conduit
US5769128A (en) * 1995-11-02 1998-06-23 Central Sprinkler Company Multilayer fluid conduits
US5775378A (en) * 1995-11-02 1998-07-07 Central Sprinkler Company Fluid conduit systems and methods for making
US5972450A (en) * 1995-10-10 1999-10-26 Bundy Corporation Metal tubing coated with multiple layers of polymeric materials
US6000436A (en) * 1995-11-02 1999-12-14 Central Sprinkler Company Fluid conduit systems and methods for making
US6009912A (en) * 1991-07-26 2000-01-04 Andre; James R. Steel pipe with integrally formed liner and method of fabricating the same
US6293311B1 (en) * 1998-05-22 2001-09-25 Pmd Holdings Corp. Multilayer composite pipe fluid conduit system using multilayer composite pipe and method of making the composite

Patent Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4216802A (en) * 1978-10-18 1980-08-12 Eaton Corporation Composite tubing product
US4559973A (en) * 1982-11-26 1985-12-24 The Furukawa Electric Co., Ltd. Water impervious heat shrinkable tube
US6009912A (en) * 1991-07-26 2000-01-04 Andre; James R. Steel pipe with integrally formed liner and method of fabricating the same
US5671780A (en) * 1992-11-17 1997-09-30 Rasmussen Gmbh Multilayer flexible conduit
US5972450A (en) * 1995-10-10 1999-10-26 Bundy Corporation Metal tubing coated with multiple layers of polymeric materials
US5769128A (en) * 1995-11-02 1998-06-23 Central Sprinkler Company Multilayer fluid conduits
US5775378A (en) * 1995-11-02 1998-07-07 Central Sprinkler Company Fluid conduit systems and methods for making
US6000436A (en) * 1995-11-02 1999-12-14 Central Sprinkler Company Fluid conduit systems and methods for making
US6293311B1 (en) * 1998-05-22 2001-09-25 Pmd Holdings Corp. Multilayer composite pipe fluid conduit system using multilayer composite pipe and method of making the composite

Cited By (33)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20020189697A1 (en) * 2001-06-06 2002-12-19 Jyri Jarvenkyla Multilayer pipe and method for manufacturing one
US6959736B2 (en) * 2001-06-06 2005-11-01 Uponor Innovation Ab Multilayer pipe and method for manufacturing one
US20050244576A1 (en) * 2001-06-06 2005-11-03 Uponor Innovation Ab, A Fristad, Sweden Corporation Multilayer pipe and method for manufacturing one
US20040045619A1 (en) * 2002-07-23 2004-03-11 Backman Arthur L. Crosslinked polyethylene pipe having a high Density polyethylene liner
US7086421B2 (en) * 2002-07-23 2006-08-08 Noveon Ip Holdings Corp. Crosslinked polyethylene pipe having a high density polyethylene liner
US20040219317A1 (en) * 2003-01-22 2004-11-04 Wellstream International Limited Process for manufacturing a flexible tubular pipe having extruded layers made of crosslinked polyethylene
US20060213569A1 (en) * 2005-03-22 2006-09-28 Tokai Rubber Industries, Ltd. Hose and method of producing the same
US7434599B2 (en) * 2005-03-22 2008-10-14 Tokai Rubber Industries, Ltd. Hose and method of producing the same
US20070107794A1 (en) * 2005-09-14 2007-05-17 Gerhard Rosenberg Sprinkler tube
US20080001405A1 (en) * 2006-06-30 2008-01-03 Anna Kui Gey Plastic-lined metallic pipe for conveying drinking-water and the connectors for the same
US20090139075A1 (en) * 2006-06-30 2009-06-04 Anna Kui Gey Process for making a plastic-lined metallic pipe for conveying liquid or gas
US7735207B2 (en) * 2006-06-30 2010-06-15 Anna Kui Gey Process for making a plastic-lined metallic pipe for conveying liquid or gas
US20100071797A1 (en) * 2008-09-25 2010-03-25 Jungers Jon W Fire retardant air handling system ductwork component and method of manufacture
US20100266781A1 (en) * 2009-04-16 2010-10-21 Grzegorz Jan Kusinski Structural Components for Oil, Gas, Exploration, Refining and Petrochemical Applications
US9284227B2 (en) 2009-04-16 2016-03-15 Chevron U.S.A. Inc. Structural components for oil, gas, exploration, refining and petrochemical applications
US20100263195A1 (en) * 2009-04-16 2010-10-21 Niccolls Edwin H Structural Components for Oil, Gas, Exploration, Refining and Petrochemical Applications
US20100266790A1 (en) * 2009-04-16 2010-10-21 Grzegorz Jan Kusinski Structural Components for Oil, Gas, Exploration, Refining and Petrochemical Applications
US8871306B2 (en) 2009-04-16 2014-10-28 Chevron U.S.A. Inc. Structural components for oil, gas, exploration, refining and petrochemical applications
US9016324B2 (en) * 2009-04-16 2015-04-28 Chevron U.S.A. Inc. Methods for joining pipe section in a pipe system containing corrosive petroleum products
US20100263761A1 (en) * 2009-04-16 2010-10-21 Niccolls Edwin H Structural Components for Oil, Gas, Exploration, Refining and Petrochemical Applications
US20130263961A1 (en) * 2012-04-04 2013-10-10 Lordo America, Inc. Composite pipe having improved bonding strength between heterogeneous materials, and apparatus and method of manufacturing the same
US9746108B2 (en) * 2014-03-04 2017-08-29 W.E. Hall Company, Inc. Composite underground pipe structure
US20150252917A1 (en) * 2014-03-04 2015-09-10 W.E. Hall Company, Inc. Composite underground pipe structure
US20190257450A1 (en) * 2018-02-21 2019-08-22 Hs Marston Aerospace Limited Intumescent protection of ptfe hoses
US11112036B2 (en) * 2018-02-21 2021-09-07 Hs Marston Aerospace Limited Intumescent protection of PTFE hoses
US10995884B1 (en) 2019-03-26 2021-05-04 Titeflex Corporation Multilayer composite pipe and pipe assemblies including reflective insulation
US11466799B2 (en) 2019-03-26 2022-10-11 Titeflex Corporation Multilayer composite pipe and pipe assemblies including reflective insulation
US11466798B2 (en) 2019-03-26 2022-10-11 Titeflex Corporation Multilayer composite pipe and pipe assemblies including reflective insulation
US11480271B2 (en) 2019-03-26 2022-10-25 Titeflex Corporation Multilayer composite pipe and pipe assemblies including reflective insulation
US11846370B2 (en) 2019-03-26 2023-12-19 Titeflex Corporation Multilayer composite pipe and pipe assemblies including reflective insulation
US12305792B2 (en) 2019-03-26 2025-05-20 Titeflex Corporation Multilayer composite pipe and pipe assemblies including reflective insulation
US12320449B2 (en) 2019-03-26 2025-06-03 Titeflex Corporation Multilayer composite pipe and pipe assemblies including reflective insulation
US12220894B2 (en) 2020-07-31 2025-02-11 Titeflex Corporation Multilayer composite tube with flame-resistant layers

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